MR Bonus Points - S&T Expo Signup?
So I was checking my balances on AwardWallet today and I saw that my MR balance increased by 5k. I just cancelled my PRG and haven't spent anything on my other MR earning cards, so I'm not sure what this 5k bonus labeled S&T Expo Signup is. I did a search which turned up an 8 yr old thread and something about it being for the pay over time option, but it has been months since I did that and AMEX supposedly denied me the points. I also sent out referral links for my Platinum card when I had it, but once again, that was months ago (Jan I think). Does anyone know what these points might be for?